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Old 7th March 2021, 10:28   #1  |  Link
hlg-tools Maintainer
wswartzendruber's Avatar
Join Date: Feb 2008
Posts: 418
I Have Published a HDR10 to HLG Converter

Version 1.0.1 is out. Get it HERE.

Hello everyone:

The hour is late here in Idaho, but I have finally published something I've been working on for over a year now. It started when I decided to rip my Blu-ray library for personal use. This would allow me complete control over the copies and I could then freely put them on any of my devices. I ran into trouble when I went to consider how to handle my 4K discs. These use entirely different gamma and color from what my PC and laptop use. Effectively, I would have to rip both the 4K and standard Blu-ray discs to keep both my current SDR devices happy along with my future HDR ones. After thinking about this prospect of ripping both discs for 3/4 of a second, I decided to look into making these 4K discs viewable on existing devices. Enter HLG. What followed was studying piles of ITU-R printouts, experimenting, more studying, more experimenting, running around in some circles, and finally a (tentatively) complete product.

Anyway, enough of all this rambling. I need to get to bed, so here you go:

You can download current packages here: https://github.com/wswartzendruber/hlg-tools/releases
You can check out the top-level README for the project here: https://github.com/wswartzendruber/h...main/README.md. It contains the conversion guide.

I should probably disclose that I have not yet gotten my hands on a good HLG display, only a Samsung that left a lot to be desired. In fact, the SDR downconversion via MPV looked leaps and bounds better than that display's interesting interpretation of things. I did briefly get to evaluate a transcode on a much more expensive Samsung set, and that looked much better. In both cases, the TV recognized the signal as HLG.
-- Things are looking much better on the set that looked bad.

All right, it's 2:30 AM. I'm off to bed!

EDIT: Hold on just a minute! I forgot to credit FranceBB with helping me here and there along the way.

EDIT: And kolak, and SeeMoreDigital, and frank...

Last edited by wswartzendruber; 12th May 2022 at 03:04. Reason: Giving credit where it's due, and, a more future-proof releases link.
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